better tab support

--HG--
branch : pmacs2

buffer.py

@@ -55,6 +55,7 @@ class Buffer(object):
         self.modified    = False
         self.highlights  = {}
         self.indentlvl   = 4
+        self.writetabs   = False
 
     def _detect_nl_type(self, data):
         mac_c  = len(self.mac_re.findall(data))
@@ -192,6 +193,16 @@ class Buffer(object):
     def num_lines(self):
         return len(self.lines)
     def make_string(self):
+        if self.writetabs:
+            lines = []
+            for line in self.lines:
+                i = 0
+                while i < len(line) and line[i] == ' ':
+                    i += 1
+                j, k = i // self.indentlvl, i % self.indentlvl
+                lines.append(('\t' * j) + (' ' * k) + line[i:])
+            return self.nl.join(lines)
+        else:
             return self.nl.join(self.lines)
 
     # methods to be overridden by subclasses
@@ -575,6 +586,8 @@ class FileBuffer(Buffer):
         if self.path_exists():
             f = self._open_file_r()
             data = f.read()
+            if '\t' in data:
+                self.writetabs = True
             f.close()
             self.store_checksum(data)
         else:

method/buffers.py

@@ -121,3 +121,13 @@ class SaveBuffer(Method):
             w.set_error("Wrote %s" % (w.buffer.path))
         else:
             w.set_error("(No changes need to be saved)")
+
+class ToggleTabs(Method):
+    '''Toggle whether to write tabs out or not (defaults to false)'''
+    def _execute(self, w, **vargs):
+        b = w.buffer
+        b.writetabs = not b.writetabs
+        if b.writetabs:
+            w.set_error("Buffer will translate %d spaces to a tab" % b.indentlvl)
+        else:
+            w.set_error("Buffer will not write tabs")

mode/__init__.py

@@ -91,7 +91,7 @@ class Fundamental(Handler):
     config     = {}
     actions    = []
     completers = {}
-    format     = "%(flag)s  %(bname)-18s  (%(mname)s)  %(cursor)s/%(mark)s  %(perc)s"
+    format     = "%(flag)s  %(bname)-18s  (%(mname)s)  %(indent)s  %(cursor)s/%(mark)s  %(perc)s"
 
     # margin/line numbering
     show_line_numbers = False
@@ -276,6 +276,13 @@ class Fundamental(Handler):
             return "Bot"
         else:
             return "%2d%%" % (w.first.y*100 / len(w.buffer.lines))
+    def _get_indent(self):
+        b = self.window.buffer
+        if b.writetabs:
+            t = '[t]'
+        else:
+            t = '[ ]'
+        return '%d%s' % (b.indentlvl, t)
     def _get_mark(self):
         w = self.window
         if w.mark:
@@ -285,14 +292,16 @@ class Fundamental(Handler):
     def get_status_names(self):
         w = self.window
         c = w.logical_cursor()
-        return {
+        d = {
             'bname':  w.buffer.name(),
             'mname':  self.name(),
             'flag':   self._get_flag(),
             'perc':   self._get_perc(),
+            'indent': self._get_indent(),
             'cursor': '(%d,%d)' % (c.y + 1, c.x + 1),
             'mark':   self._get_mark(),
         }
+        return d
     def get_status_bar(self):
         names = self.get_status_names()
         return self.format % names